1. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 1 

2. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 2 MC simulation: beam plugs are to be made out of lead (  -chambers close to beam pipe, partly inner HCAL) MC assumptions: No beam pipe inclination angle At some positions exaggeration of material thickness Shielding follows the conical shape of beam pipe … Input from MC

3. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 3 x z ECAL HCAL

4. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 4 y z ECAL HCAL adjustment ECALadjustment HCAL delta ECAL/HCAL = 3mm Slope of the beam 3.601 mrad

5. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 5 Beam plug for ECAL from 06/2003

6. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 6 Beam plug for HCAL from 06/2003

7. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 7 If we need to have shielding at z-region of PS/SPD, it should be made from PS/SPD lead Interference/conflict with permanent jacket for bake-out? The ECAL beam plug supports modules on top of it (~1.5 t) requires steel frame around lead Installation: 03/2005 with palonnier(?) not possible to download from top (electronics platform) The HCAL beam plug does not support anything Installation: 02/2005 (?) with (?) possible to download from top or put from side Constraints

8. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 8 Palonnier from LCAL

9. Pre-LHCb week / CALO meeting, CERN 21.09.2004SBBeam plugs for in 9  Should the beam plugs follow the inclination of beam pipe? yes, if no significant influence on the cost  Should the beam plugs follow the conical shape of beam pipe? yes, if no significant influence on the cost  Is the shielding needed in the region between flanges and bellow? no Open questions